Remote Access VPN
Remote Access VPN
Remote access VPN typically are used for low-bandwidth or broadband connections between a single-user device, such as a PC or small-office-home-office (SOHO), a hardware client & a VPN gateway device. VPN client that connects to the VPN gateway will need two IP addresses: one for its NIC and one for an internal address, which is sometimes referred to as a virtual or logical address or assigned IP address. Cisco recommends using Cisco VPN 3000 series concentrators as the VPN gateway as it is much, much easier to set up and troubleshoot remote access connectivity on the concentrators than on the other two products link router or ASA
Example of Remote Access VPN
In this example, a cable modem user from home is using a PC to connect to the corporate office through a VPN gateway, say the VPN 3000 concentrator. The ISP uses DHCP to assign an IP address to the user’s NIC on the home PC. A second address is needed for communication to devices at the corporate office that need to be protected; this is the internal address, which can sometimes be assigned by the user manually, or, more commonly, acquired from the VPN gateway during the setup of the VPN session.
Disadvantages of Remote Access VPN
- Remote access VPN does not support QOS
- Possibility of data loss is very high
- Can get latency very high.